'use client';

import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
import type { ValuationResult } from '@/lib/valuation-api';

interface ValuationResultsProps {
  result: ValuationResult;
}

function formatPrice(num: number): string {
  if (num >= 1_000_000_000) return `${(num / 1_000_000_000).toFixed(2)} tỷ`;
  if (num >= 1_000_000) return `${(num / 1_000_000).toFixed(0)} triệu`;
  return num.toLocaleString('vi-VN');
}

function formatPriceM2(price: number): string {
  if (price >= 1_000_000) return `${(price / 1_000_000).toFixed(1)} tr/m²`;
  return `${price.toLocaleString('vi-VN')} đ/m²`;
}

export function ValuationResults({ result }: ValuationResultsProps) {
  const confidencePct = Math.round(result.confidence * 100);

  return (
    <div className="space-y-6">
      {/* Main estimate */}
      <Card className="border-primary/20 bg-primary/5">
        <CardHeader className="pb-3">
          <CardDescription>Giá ước tính bởi AI</CardDescription>
          <CardTitle className="text-3xl text-primary">
            {formatPrice(result.estimatedPriceVND)} VNĐ
          </CardTitle>
        </CardHeader>
        <CardContent>
          <div className="grid gap-4 sm:grid-cols-3">
            <div>
              <p className="text-sm text-muted-foreground">Độ tin cậy</p>
              <div className="mt-1 flex items-center gap-2">
                <div className="h-2 flex-1 rounded-full bg-muted">
                  <div
                    className="h-2 rounded-full bg-primary transition-all"
                    style={{ width: `${confidencePct}%` }}
                  />
                </div>
                <span className="text-sm font-medium">{confidencePct}%</span>
              </div>
            </div>
            <div>
              <p className="text-sm text-muted-foreground">Giá/m²</p>
              <p className="mt-1 text-lg font-semibold">{formatPriceM2(result.pricePerM2)}</p>
            </div>
            <div>
              <p className="text-sm text-muted-foreground">Khoảng giá</p>
              <p className="mt-1 text-lg font-semibold">
                {formatPrice(result.priceRangeLow)} – {formatPrice(result.priceRangeHigh)}
              </p>
            </div>
          </div>
        </CardContent>
      </Card>

      {/* Price drivers */}
      {result.priceDrivers.length > 0 && (
        <Card>
          <CardHeader>
            <CardTitle className="text-lg">Yếu tố ảnh hưởng giá</CardTitle>
            <CardDescription>Các yếu tố chính tác động đến giá trị bất động sản</CardDescription>
          </CardHeader>
          <CardContent>
            <div className="space-y-3">
              {result.priceDrivers.map((driver) => (
                <div key={driver.feature} className="flex items-center gap-3">
                  <span
                    className={`text-sm font-medium ${
                      driver.direction === 'positive' ? 'text-green-600' : 'text-red-600'
                    }`}
                  >
                    {driver.direction === 'positive' ? '+' : '-'}
                    {Math.abs(driver.impact).toFixed(1)}%
                  </span>
                  <div className="flex-1">
                    <div className="flex items-center gap-2">
                      <span className="text-sm">{driver.feature}</span>
                    </div>
                    <div className="mt-1 h-1.5 rounded-full bg-muted">
                      <div
                        className={`h-1.5 rounded-full ${
                          driver.direction === 'positive' ? 'bg-green-500' : 'bg-red-500'
                        }`}
                        style={{ width: `${Math.min(Math.abs(driver.impact), 100)}%` }}
                      />
                    </div>
                  </div>
                </div>
              ))}
            </div>
          </CardContent>
        </Card>
      )}

      {/* Comparables */}
      {result.comparables.length > 0 && (
        <Card>
          <CardHeader>
            <CardTitle className="text-lg">Bất động sản tương tự</CardTitle>
            <CardDescription>
              {result.comparables.length} bất động sản có đặc điểm tương tự trong khu vực
            </CardDescription>
          </CardHeader>
          <CardContent>
            <div className="space-y-3">
              {result.comparables.map((comp) => (
                <div
                  key={comp.id}
                  className="flex items-center gap-4 rounded-lg border p-3"
                >
                  <div className="min-w-0 flex-1">
                    <p className="truncate font-medium">{comp.title}</p>
                    <p className="text-sm text-muted-foreground">
                      {comp.district} &middot; {comp.areaM2} m²
                    </p>
                  </div>
                  <div className="text-right">
                    <p className="font-semibold text-primary">{formatPrice(Number(comp.priceVND))}</p>
                    <p className="text-sm text-muted-foreground">
                      {formatPriceM2(comp.pricePerM2)}
                    </p>
                  </div>
                  <div className="hidden sm:block">
                    <span className="rounded-full bg-accent px-2 py-1 text-xs font-medium">
                      {Math.round(comp.similarity * 100)}% tương tự
                    </span>
                  </div>
                </div>
              ))}
            </div>
          </CardContent>
        </Card>
      )}
    </div>
  );
}